Arc-lamp hanger and cut-out.



PATENTED AUG. 22, 1905.

0, E. HARTHAN.

ARC LAMP HANGER AND GUT-QUT.

APPLIOATION FILED 3.21%.,28, 1903- 3 BHEFTB-SHEBT 1.

muntullmnnuluw- Indentor Charles BHarthz-an ymailw (Bit/messes moumwmrnus. wmwrmwm a. c.

ANDREW. u cmmm co. m

PATENTED AUG. 22, 1905.

C. E. HARTHAN. ARC LAMP HANGER AND GUT-OUT.

APPLICATION FILED APR. 29, 1903.

3 SHEETS-$113111 2.

Indenoor Charles E3. Haw-than witnesses mnnswv u. GRAHAM 00. Puomumoarumms. wAsml No. 797,806. PATENTED AUG. 22, 1905 0.E.HARTHAN. ARC LAMP HANG-ER AND GUT-OUT.

APPLICATION FILED APR. 29, 190.3.

3 SHEETS-SHEET 3.

Ul3itn@ssee jlirwer'ntaw ANDREW. $3. amuuu 00.. Pmmumocawuns. wmnmmou. o. c

STATES PATENT QFFIOE.

CHARLES E. HARTHAN, OF LYNN, MASSACHUSETTS, ASSIGNOR TO GEN- ERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ARC-LAMP HANGER AND GUT-our.

Specification of Letters Patent.

Patented Aug. 22, 1905.

Application filed Ap1'i129,1903. Serial lilo-154.861.

To all who? it ntcty concern:

Be it known that 1, CHARLES E. HARTHAN, a citizen of the United States, residing at Lynn, county of Essex, State of Massachusetts, have invented certain new and useful Improvements in an Arc-Lamp Hanger and Cut-Out, of which the following is a specification.

The object of the present invention is to provide an improved arc-lamp hanger and cutout for use on high-tension circuits in which the operative parts are effectually protected from the weather and from injury by rough usage.

The invention will be readily understood upon reference to the following description and the accompanying drawings, forming a part of this specification, in which Figure 1 is a vertical section of an arc-lamp hanger embodying one form of my invention with a lamp shown supported therefrom. Fig. 2 is a side elevation of the hanger with theinclosing shell shown in section. Fig. 3 is a section of the holder on line 3 3 of Fig. 1, showing a bottom plan of the switch parts. Fig. 4 is a section of the holder on line 44 of Fig. 1, showing a top plan of the bottom plate. Fig. 5 is an enlarged transverse section of the switch and its base, taken on a line to one side of the controlling snap-spring; and Fig. 6 is a conventional diagram of the electric connections.

In the construction shown in the drawings the inclosing shell 1 is made bell shape, with integral arms 2 2, extending outwardly on opposite sides of its upper end and provided at their ends with vertical supports 3 3, carrying line-insulators 4 4'. The upper end of the shell is provided with a central projection 5, into which the supporting-bolt 6 is threaded. The bolt 6 is provided with a broad flat head 7, which rests in the recess 8 in the top of the lower section of the main insulator 9, through which the bolt extends, and above the head 7 the bolt is provided with a short threaded projection 10. The main insulator 9 comprises upper and lower sections 11 and 12. The lower section 12 is made large at its bottom end and provided with a plurality of petticoats 13. Its upper end is provided with a crown-flange 14, and intermediate its ends it is contracted to a diameter considerably less than the inner diameter of the flange 14. The upper section 11 is nearly hemispherical and is provided in its bottom side with a central threaded recess for engagement with the bolt projection and a groove 15 near its periphery, whereby a drip is formed about its edge. Surrounding the lower section 12 at its most contracted point is a supportinghoop 16, having an internal diameter less than the diameter of the bolt-head 7 and provided with lugs 17, to which the suspension-bail 18 is connected. According to this arrangement the parts of a broken insulator will ordinarily be held from falling out of place, and in case the insulator should be completely shattered the lamp and hanger will still be prevented from falling by reason of the impossibility of the bolt head 7 being drawn through the hoop 16.

Within the cavity of the'bell-shaped holder 1 an insulating-base 19 is secured by screws 20, tapped into the upper end of the holder. The base 19 is provided with two integral lugs 19 and 19", in which is journaled the shaft 21 of the switch and between which are located the spring-contacts 22, 23, 24, and and their respective binding-posts 22, 23, 24, and 25, to which the main line and lamp conductors are respectively connected. The switch-shaft 21 has fixed thereon between the lugs 19 and 19 two elliptical contacts 26 and 27, arranged to close the circuits from contacts 22 to 25 and 23 to 24, respectively, and between the contacts 26 and 27 the shaft is provided with a short arm 28, having in its end a frictionroll 29, which is arranged to cooperate with a snap-spring30, provided with a double-hr clined portion 31 to throw the switch with a snap action into its extreme positions. One end of the shaft projects through the lug 19' and is provided with a segmental gear 32, connected thereto by a lost-motion lug and slot 33, whereby the shaft is rendered free to move to its extreme position under the influence of the snap-spring 30.

The bell-shaped holder is provided near its lower end with an inwardly-projecting ledge 34, to which the bottom plate 35 is secured by screws 36. The bottom plate 35 carries at its center a lamp-hook 37, and at one side thereof it is provided with a sleeved aperture 38, provided with an insulating-bush 39, in which is journaled the shaft of the actuating-arm 41, to which is connected the segmental rack 42, which meshes with the gear 32. Four hushed apertures 43, 44, 45, and 46 are also provided in the plate 35 for the passage of the line and lamp wires to their respective binding-posts. This arrangement of the switch and its operating means provides for an effective housing thereof within the shell, and in case the hanger or its actuating-arm receives a blow from rough handling or otherwise the. switch mechanism will not be injured. Moreover, by taking out the screws 36 the bottom plate and the parts carried thereby may be removed without disturbing the switch parts.

I do not desire to restrict myself to the particular form or construction of parts shown in the drawings, since it is apparent that they may be changed and modified without departing from my invention; p

What I claim as new, and desire to secure by Letters Patent of the United States, is

l. Thecombination of an inclosing shell, an electric switch secured to the inner side thereof and provided with means for transmitting motion thereto, and a removable platesecured to said shell and provided with means for actuating from the outside the motion-transmitting means carried by said switch.

2. The combination of an inclosing shell, an electric switch secured transversely to the inner side thereof and provided with means for transmitting motion thereto, and a removable plate secured to said shell and provided with means for actuating from the outside the motion-transmitting means carried by said switch.

3. The combination of a bell-shaped lIlClOS'. ing shell open at its lower end, an electric switch secured within said shell and provided with means for transmitting motion thereto, and a removable plate secured to said shell over its open end and provided with means for actuating from the outside the motiontransmitting means carried by said switch.

4. The combination of an inclosing shell, an electric switch secured to the inner side thereof and having its shaft provided with an actuating-gear, and a removable plate secured to said shell and provided with an actuating-arm to which is connected a gear adapted to mesh with the gear on the shaft of the switch.

5. The combination of an inclosing shell, an electric switch mounted therein and having a gear connected to its shaft by a lost-motion arrangement, and a removable plate secured to said shell and provided with an actuatingarm to which is connected 2. gear adapted to mesh with the gear on the shaft of the switch. 7

In witness whereof I have hereunto set my hand this 27th day of April, 1903.

CHARLES E. HARTHAN.

Witnesses: 4

DUGALD McK. McKILLoP,

WILLIAM G. FISHER. 

